<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <style rel="stylesheet" type="text/css">
        .can2{
            background: aquamarine;
            height: 30px;
            width: 100px;
            padding: 30px;
            text-align: center;
        }
    </style>
</head>
<body>

<div>
    <div class="can2">可以拖拽</div>
</div>
</body>
</html>